(19)

(11)

EP 2 689 237 A1

(12)

(43) Date of publication: 29.01.2014 Bulletin 2014/05 (21) Application number: 12716130.5 (22) Date of filing: 14.03.2012

(51) International Patent Classification (IPC):  G01N 21/85(2006.01) G01N 21/53(2006.01) G01N 21/03(2006.01) (86) International application number: PCT/US2012/029063 (87) International publication number: WO 2012/134820 (04.10.2012 Gazette 2012/40)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 25.03.2011 US 201113072448 (71) Applicant: Parker-Hannifin Corporation Cleveland, OH 44124 (US)	(72) Inventors: SCHICK, Karl, G. Madison WI 53719 (US) UHEN, David Burlington WI 53105 (US) (74) Representative: Calderbank, Thomas Roger  Mewburn Ellis LLP 33 Gutter Lane London EC2V 8AS London EC2V 8AS (GB)